Question: Is there a service that allows me to tap into ChatGPT's power without requiring setup or passwords?

If you want a service that lets you tap into ChatGPT's power without the hassle of installation or logins, TextGPT is a great choice. The service dovetails with your iPhone's iMessage app for quick ChatGPT answers embedded in your messaging app. It also includes a Canvas Creator tool to make your own custom wallpapers, and it's a good choice if you want something that works on your phone.

Another good choice is EmbedAI, an AI chatbot builder that uses ChatGPT to create custom chatbots. You can train the chatbots on your own data sources, like files, websites and YouTube videos, and share them with others through chat bubbles, embed codes or website links. It works in more than 100 languages and can be integrated with other apps through API or Zapier, so it can be used in everything from e-commerce to education.

If you want to add ChatGPT to your website, Chattie is a no-code service that lets you train chatbots with your own data sources. It offers features like automated prompt generation, statistical analysis and a built-in theme editor to customize the look of your chatbots. With several pricing tiers and a free trial, it's a good option if you want to add some user engagement and interactivity to your website without having to write any code.

Last, Numerous.ai is an AI plugin that lets you use ChatGPT in Google Sheets and Excel. It's easy to install and use, with a simple syntax and collaborative performance. It's good for research, digital marketing, summarizing data and generating content, all within the familiar spreadsheet interface.